4″ (100mm) Fused Silica Wafer

$22.50$28.00 /pcs

*Free Shipping for All U.S. Orders via FedEx Ground


*Only in-stock options are available for selection. For custom wafers, request a quote here.

Select your specifications below:

Quantity Discount:

Quantity(pcs) 100 - 225 250 - 475 500 - 1000
Price $21.38$26.60 $20.25$25.20 $19.13$23.80
% Discount 5% 10% 15%
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WaferPro 4″ (100mm) Fused Silica Wafer


WaferPro, a world-leading supplier of semiconductor materials, now offers high-quality 4″ (100mm) fused silica wafers. These wafers are made from high-purity fused silica, providing very low metal contamination and high transmission for UV light. They are suitable for UV optical and semiconductor applications, featuring extremely low trace metal and OH content, and a low coefficient of thermal expansion (CTE).

Key Specifications:

Specification Value
Material High Purity Fused Silica
Diameter 100.0 ± 0.2 mm
Thickness Tolerance ± 25 μm
Bow ≤40 µm
Warp ≤40 µm
Surface Roughness (Ra) ≤0.5 nm
TTV ≤10 μm
Packaging Cleanroom Packed

Key Features:

  • High Purity – Our fused silica wafers are made from high-purity fused silica, ensuring low metal contamination and high UV light transmission.
  • Double Side Polished – The wafers are double side polished, providing a smooth and uniform surface.
  • Low CTE – The wafers have a low coefficient of thermal expansion, making them suitable for high thermal processing.
  • Cleanroom Packed – The wafers are packaged in a cleanroom environment to protect them from particulate contamination.
  • Versatile Applications – Our fused silica wafers are suitable for a wide range of applications, including UV optical and semiconductor applications.
  • Trusted by Industry Leaders – Our fused silica wafers are used by leading research labs and high volume production facilities worldwide.
  • Quality Control and Inspection – Every wafer undergoes comprehensive quality inspection and testing.

Major Applications:

Our expertise in wafer manufacturing allows us to produce high-quality 4-inch fused silica wafers for a variety of applications:

  • UV optical applications
  • Semiconductor manufacturing
  • Sensor manufacturing
  • Research and development
  • High thermal processing applications

Our stringent quality control ensures the high purity and thickness uniformity needed to serve as substrates across high-tech industries. Please discuss your specific application with us so we can recommend configurations to optimally meet your needs.

Quantity Discounts:

As your supplier of 100mm fused silica wafers, we offer discounts on orders of 100 wafers or more. Please inquire with us about customized pricing for your high volume wafer needs (1,000pcs or more). We can provide prompt quotes for the quantities you require. Volume pricing represents a way for us to pass significant savings to you, our valued customer.

FAQs on 100mm Fused Silica Wafer:

What are fused silica wafers used for?

Fused silica wafers are most commonly used to manufacture optical and semiconductor components like lenses, prisms, filters, photomasks, and microfluidic devices. They can withstand high temps.

What thickness options do you offer for 100mm fused silica wafers?

We offer standard thicknesses ranging from 0.5mm to 2.0mm. Thinner or thicker wafers can also be customized including ultra-thin 100mm fused silica down to 10 microns.

What surface roughness options are available?

Our standard 4″ fused silica wafers have surface roughness starting at <5Å Ra. We offer custom polished fused silica wafers with standard surface roughness starting at <5Å Ra and ranging to super polished <1Å Ra, tailored to your application needs.

Do you supply prime or reclaimed fused silica wafers?

We supply prime grade 100mm fused silica wafers only.

Can I order smaller quantities of 100mm fused silica wafers?

Minimum order quantity is one full cassette which has 25 wafers.

How long is the lead time for 4″ fused silica wafer orders?

Lead times for stock wafers are typically 1-2 days. Customized 100mm wafers generally require a 4-6 week manufacturing time depending on your specs.

Contact Us:

Please reach out to us with any other questions on how our 4-inch 100mm fused silica wafers can enable your next technology breakthrough! Contact us with any inquiries on specifications, pricing, or lead times.


Packaging for WaferPro 100mm Fused Silica Wafer:

  • All wafers are packed in wafer cassettes made from ultra-clean PP material
  • Each cassette holds 25 wafers
  • Each cassette is vacuum sealed double-bagged in poly & foil antistatic bags
  • All cassettes are designed to interface with automated equipment
  • SEMI compliant

Shipping & Return Policy:

We offer free US standard shipping via FedEx within the continental United States. Customers can expect to receive their order within 2-7 business days after it has shipped. For orders being shipped to Alaska, Hawaii, Puerto Rico, or internationally, additional shipping costs and extended delivery times may apply. Contact us for international shipping quotes or get an estimate on the checkout page. All orders are carefully inspected, packaged, and shipped from our California warehouse.

A tracking number will be emailed to you once your order has shipped.

We want you to be fully satisfied with every purchase.
If, for any reason, you would like to return an unopened and unused product within 30 days of delivery, please contact us to request a return authorization. The product must be in the original packaging and in the same condition as when you received it. Approved returns must be shipped back in resalable condition within 45 days of our delivery date. Upon receipt and inspection of the returned product, you will receive a full refund to your original payment method. Shipping fees are nonrefundable. Exchanges for alternative wafer sizes/specs can be accommodated, subject to inventory availability. Please send us details about the exchange you would like to make prior to shipping the original product back. If you receive damaged products, defective products, or incorrect items, please notify us within 48 hours of delivery with details and photographs documenting the issues. We will provide prompt assistance. Please contact us with any questions about our shipping guidelines or returns process. Our customer service team is available Monday-Friday, 9 AM – 6 PM Pacific. Our email address is sales@waferpro.com.